The Effect of TiO2 Contained within a Titanium Silicalite (TS-1) Catalyst and on the Selective Oxidation of Ammonia


Deniz C. U. , Akmaz S. , Yasar M.

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING, vol.11, pp.527-534, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11
  • Publication Date: 2013
  • Doi Number: 10.1515/ijcre-2013-0086
  • Journal Name: INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.527-534

Abstract

The selective oxidation of ammonia to hydroxylamine using titanium silicalite-1 as a catalyst with an increasing content range of 1-2.5 wt% TiO2 was systematically investigated in a batch reactor. The hydroxylamine yielded 33, 43, 52 and 62% at reaction temperatures of 50, 60, 70 and 80 degrees C, respectively, for 8 min using a TS-1a catalyst, which contained 2.5% TiO2. The molar ratio of 15 NH3/H2O2 was kept during these reactions. Experiments were also conducted with different amounts of NH3/H2O2 in molar ratios, which were between 7 and 60 to investigate the effect of NH3/H2O2 molar ratio on the reactions. Reactions with higher ratios of NH3/H2O2 were seen to have a higher yield at the end of the reaction performance time.